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