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