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