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