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