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