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