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