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