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