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