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