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