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