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)(11,13)(12,14)(15,16)(17,18,22,25)(19,24,27,20)(21,23,30,32)(26,31,29,28)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,19,22,27)(18,20,25,24)(21,29,30,26)(23,31,32,28)(1,2,5,4)(3,6,8,7)(9,11)(10,13)(12,16)(14,15)(17,20,19,25,22,24,27,18)(21,28,26,32,30,31,29,23)(1,2,5,4)(3,7,8,6)(11,16)(13,15)(17,21)(18,23)(19,26)(20,28)(22,30)(24,31)(25,32)(27,29)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(17,19,22,27)(18,24,25,20)(21,29,30,26)(23,28,32,31)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.