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)(19,27)(20,21)(22,25)(23,26)(24,31)(28,30)(29,32)(2,6)(7,8)(9,11,13,10)(12,15,16,14)(17,19,22,31,23,30,21,29)(18,24,20,27,26,32,25,28)(1,3,5,4)(2,7,6,8)(10,11)(14,15)(17,20,22,26,23,25,21,18)(19,28,31,24,30,27,29,32)(1,4,5,3)(2,8,6,7)(12,16)(14,15)(17,21,23,22)(18,20,26,25)(19,29,30,31)(24,27,32,28)(9,12,13,16)(10,14,11,15)(19,30)(24,32)(27,28)(29,31)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.