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