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