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