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)(17,18,22,27)(19,28,31,32)(20,26,21,25)(23,30,24,29)(1,2)(3,4)(9,11,13,12)(10,14,15,16)(17,19,22,31)(18,23,27,24)(20,30,21,29)(25,32,26,28)(2,4)(9,12,13,11)(10,14,15,16)(17,19,21,30,22,31,20,29)(18,24,26,28,27,23,25,32)(6,8)(17,19,22,31)(18,23,27,24)(20,30,21,29)(25,32,26,28)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.