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