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