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