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