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