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