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