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