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