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