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