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