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