One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,6)(3,4,8,7)(9,10,15,16)(11,14,13,12)(17,18,21,22)(19,23,24,20)(26,29)(30,31)(2,6)(4,7)(9,11,15,13)(10,12,16,14)(18,22)(20,23)(1,3)(2,7)(4,6)(5,8)(9,12,15,14)(10,11,16,13)(17,18)(19,20)(21,22)(23,24)(25,26)(27,31)(28,29)(30,32)(1,3)(2,7)(4,6)(5,8)(9,13,15,11)(10,12,16,14)(17,19)(18,20)(21,24)(22,23)(25,27,28,32)(26,30,29,31)(1,4,5,7)(2,3,6,8)(9,14,15,12)(10,11,16,13)(17,20)(18,19)(21,23)(22,24)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.