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