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