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