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