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