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