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