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