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)(11,15)(12,13)(14,16)(17,18)(19,22)(20,23)(21,24)(25,26,29,28)(27,31,32,30)(2,6)(4,7)(9,11,14,12)(10,13,16,15)(17,19,20,24)(18,21,23,22)(26,28)(30,31)(1,3)(2,4)(5,8)(6,7)(9,11,14,12)(10,15,16,13)(17,18)(19,22)(20,23)(21,24)(25,26,29,28)(27,30,32,31)(1,3)(2,7)(4,6)(5,8)(9,12,14,11)(10,15,16,13)(17,18)(19,21)(20,23)(22,24)(25,27)(26,30)(28,31)(29,32)(1,4,5,7)(2,8,6,3)(9,13,14,15)(10,12,16,11)(17,19)(18,22)(20,24)(21,23)(25,28,29,26)(27,30,32,31)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.