One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,4)(3,6,8,7)(9,10,14,15)(11,12,16,13)(17,18,24,19)(20,27,30,25)(21,22,23,26)(28,29,31,32)(1,3)(2,6)(4,7)(5,8)(9,11)(10,12)(13,15)(14,16)(17,19,23,26,24,18,21,22)(20,25,28,29,30,27,31,32)(1,4,5,2)(3,7,8,6)(10,15)(11,16)(17,20)(18,25)(19,27)(21,31)(22,29)(23,28)(24,30)(26,32)(3,8)(6,7)(9,12,14,13)(10,11,15,16)(17,21,24,23)(18,26,19,22)(20,28,30,31)(25,29,27,32)(9,13,14,12)(10,11,15,16)(17,22,23,19,24,26,21,18)(20,29,28,27,30,32,31,25)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.