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)(19,25)(20,29)(21,26)(22,27)(23,30)(24,31)(28,32) involution — undirected(1,2)(3,8)(4,6)(5,7)(10,14)(12,15)(17,19)(18,23)(20,28)(21,29)(22,30)(24,32)(25,27)(26,31) involution — undirected(1,3)(2,4)(5,6)(7,8)(9,10,13,14)(11,15,16,12)(20,31)(21,32)(24,29)(26,28)(3,6)(4,8)(9,11)(10,15)(12,14)(13,16)(17,20,22,31)(18,24,27,29)(19,28,30,26)(21,23,32,25)(1,4,5,8)(2,6,7,3)(9,12,13,15)(10,11,14,16)(17,19)(18,25)(20,26)(21,29)(22,30)(23,27)(24,32)(28,31)(1,2)(3,8)(4,6)(5,7)(9,11)(10,15)(12,14)(13,16)(17,21,22,32)(18,26,27,28)(19,29,30,24)(20,23,31,25)A 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.