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