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