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