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