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