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