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