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