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