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