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