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