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