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