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)(12,14)(13,16)(18,24)(19,29)(20,25)(21,23)(26,31)(30,32) involution — undirected(2,5)(6,8)(9,11)(10,13)(12,16)(14,15)(17,18)(19,30)(20,31)(21,27)(22,24)(23,28)(25,29)(26,32) involution — undirected(10,14)(11,16)(17,19,23,26,22,31,21,29)(18,25,27,20,24,32,28,30)(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,20,21,25,22,30,23,32)(18,26,28,19,24,29,27,31)(2,5)(6,8)(10,14)(13,15)(17,21,22,23)(18,27,24,28)(19,26,31,29)(20,25,30,32)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.