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