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