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