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