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