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