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