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