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