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