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