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