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)(11,14)(12,15)(13,16)(17,18,21,24)(19,20,23,22)(25,26,29,30)(27,28,31,32)(1,3,6,4)(2,7,8,5)(9,10,13,16)(11,14,15,12)(26,30)(28,32)(9,11)(10,12)(13,15)(14,16)(17,19,21,23)(18,22,24,20)(25,26,29,30)(27,28,31,32)(1,4,6,3)(2,5,8,7)(9,11)(10,14)(12,16)(13,15)(17,18)(19,22)(20,23)(21,24)(25,27)(26,28)(29,31)(30,32)(1,5)(2,4)(3,8)(6,7)(9,12,13,14)(10,15,16,11)(17,20,21,22)(18,23,24,19)(25,28)(26,31)(27,30)(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.