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