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