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