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)(11,14)(12,16)(13,15)(18,23)(20,27)(24,31)(25,29)(1,3,5,4)(2,6,8,7)(9,11,13,12)(10,14,15,16)(18,24)(20,29)(22,30)(23,31)(25,27)(28,32)(1,3,5,4)(2,7,8,6)(10,15)(14,16)(17,18)(19,27)(20,26)(21,23)(22,31)(24,30)(25,32)(28,29)(9,12,13,11)(10,16,15,14)(17,19,21,26)(18,25,23,29)(20,24,27,31)(22,32,30,28)(1,4,5,3)(2,6,8,7)(17,20,21,27)(18,26,23,19)(22,25,30,29)(24,28,31,32)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.