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