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