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