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