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)(17,18,24,32,23,21,22,27)(19,26,28,25,20,30,29,31)(9,10)(11,15)(12,14)(13,16)(17,19,23,20)(18,25,21,31)(22,28,24,29)(26,27,30,32)(1,3,5,4)(2,6,7,8)(9,11,12,16)(10,13,14,15)(17,20,23,19)(18,26,21,30)(22,28,24,29)(25,27,31,32)(11,16)(13,15)(17,21,24,27,23,18,22,32)(19,26,28,25,20,30,29,31)(1,4,5,3)(2,6,7,8)(10,14)(13,15)(17,22,23,24)(18,27,21,32)(19,28,20,29)(25,30,31,26)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.