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