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