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