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