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)(17,18,22,24)(19,27,29,20)(21,32,30,25)(23,26,31,28)(1,2)(3,6)(4,5)(7,8)(9,11,12,15)(10,13,14,16)(17,19)(18,20)(21,23)(22,29)(24,27)(25,26)(28,32)(30,31)(10,14)(13,16)(17,20,31,25,22,27,23,32)(18,19,28,21,24,29,26,30)(1,3,4,7)(2,6,5,8)(18,24)(20,27)(25,32)(26,28)(2,5)(6,8)(17,21,23,19,22,30,31,29)(18,25,26,20,24,32,28,27)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.