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