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