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