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