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