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