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