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