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