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