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