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