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