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