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