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