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