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