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