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