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