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