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