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