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