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