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)(11,15)(12,13)(14,16)(17,18,22,20)(19,24,21,23)(25,26,29,32)(27,31,28,30)(1,3,5,8)(2,6,4,7)(9,11,14,12)(10,13,16,15)(17,19)(18,23)(20,24)(21,22)(25,27)(26,30)(28,29)(31,32)(9,11,14,12)(10,15,16,13)(17,18,22,20)(19,24,21,23)(25,26)(27,30)(28,31)(29,32)(1,4,5,2)(3,7,8,6)(9,12,14,11)(10,15,16,13)(17,20,22,18)(19,24,21,23)(25,28,29,27)(26,31,32,30)(1,3)(2,7)(4,6)(5,8)(9,13,14,15)(10,12,16,11)(17,21,22,19)(18,23,20,24)(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.