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