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