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