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