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