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