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