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