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