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