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