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