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