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