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