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