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