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