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