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