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