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