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