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