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