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