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