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