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