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