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