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