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