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