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