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