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