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