I think diagrams for a Superswitch mostly include extra capabilities that can't be done with a regular 5-way.
Any reason not to use a standard switch?
I did find one for a Superswitch, though. However it doesn't give the middle single by itself - pos 3 is both full hums here.
You could use a push-pull on the tone pot to give just the middle pickup when pulled.
P1 - bridge full
P2 - bridge north plus middle
P3 - middle only
P4 - neck north plus middle
P5 - neck full
I'll draw it up this morning, but what you need to do is:
Wire the bridge humbucker hot (black on an SD humbucker) to P1 and P2 on one set of contacts.
Wire the neck humbucker hot to P4 and P5 on the same bank.
Wire the common on that bank to the volume pot.
Wire the volume and tone pots Telecaster style.
Wire the bridge humbucker red and white pair to the P2 contact on a second bank, Wire the neck red and white pair to P4 on that same, second, bank of contacts.
Wire the common / out on that second bank to ground on the back of a pot.
Wire the humbucker green and bare directly to ground.
Now take the single coil hot (white) and connect that to P2, P3, and P4 on a third set of contacts.
Connect the common contact on that third set to the common / out contact on the first set, where you connected the humbucker hots / blacks in steps 1 and 2.
Ground the single coil ground (black).
The fourth set of contacts should be free. You can use this to hotrod the controls, bypass the tone, etc. In certain positions if you want to.
The default is to coil split in favor of leaving the North (slug) coils active. Regular SD single coils are configured as "souths", so this gives hum canceling in P2 and P4.
If you want to split to the south (screw) coils I'll have to rework the diagram, and you'll need to use a RWRP single coil (a "north") in the middle if you want to get hum canceling.