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