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