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