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