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