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