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