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