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