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