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