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