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