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