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