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