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