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