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