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