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