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