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