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)(17,18,23,28)(19,24,20,25)(21,26,29,31)(22,27,30,32)(9,10)(11,15)(12,16)(13,14)(17,19)(18,24)(20,23)(21,22)(25,28)(26,27)(29,30)(31,32) involution — undirected(2,5)(6,8)(9,11,13,12)(10,15,14,16)(17,20,30,29,23,19,22,21)(18,25,32,31,28,24,27,26)(1,3,4,7)(2,6,5,8)(9,12,13,11)(10,16,14,15)(10,14)(15,16)(17,21,30,20,23,29,22,19)(18,26,32,25,28,31,27,24)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.