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