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