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