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