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