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