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