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