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