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