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