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