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