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