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