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