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)(17,18,21,26,22,24,20,25)(19,27,31,32,28,29,30,23)(10,13)(11,15)(17,19,22,28)(18,23,24,32)(20,31,21,30)(25,27,26,29)(1,3,5,4)(2,6,7,8)(9,10)(11,14)(12,13)(15,16)(18,24)(19,28)(25,26)(30,31)(10,13)(14,16)(17,18,20,25,22,24,21,26)(19,29,30,32,28,27,31,23)(1,4,5,3)(2,6,7,8)(9,11,12,15)(10,14,13,16)(17,20,22,21)(18,25,24,26)(19,30,28,31)(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.