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