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)(19,23,27,32)(20,28,21,24)(26,31,29,30)(2,5)(6,8)(9,10)(11,14)(12,16)(13,15)(17,19,22,27)(18,23,25,32)(20,29,21,26)(24,31,28,30)(9,11,14,10)(12,16,13,15)(17,18)(19,23)(20,24)(21,28)(22,25)(26,30)(27,32)(29,31)(9,12,14,13)(10,15,11,16)(17,20,22,21)(18,24,25,28)(19,26,27,29)(23,30,32,31)(9,13,14,12)(10,15,11,16)(17,21,22,20)(18,24,25,28)(19,26,27,29)(23,31,32,30)(1,3,4,7)(2,6,5,8)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.