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