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