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