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