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