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