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