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