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