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