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