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