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