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