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