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