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