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