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