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