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