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