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