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