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