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