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