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