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