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