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