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