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