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