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