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