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