One vertex per element, one color per generator, with an edge from x to x·s.
(5,6,8,7)(11,15)(14,16)(17,18)(19,23)(20,24)(21,22)(25,27)(26,31)(28,32)(29,30)(2,4)(9,10,13,12)(11,14,15,16)(18,21)(19,25)(24,29)(26,28)(1,2)(3,4)(5,7,8,6)(9,11)(10,14)(12,16)(13,15)(17,19,22,25)(18,23,21,27)(20,28,30,26)(24,32,29,31)(9,11)(10,14)(12,16)(13,15)(17,20,22,30)(18,24,21,29)(19,26,25,28)(23,31,27,32)(9,12,13,10)(11,16,15,14)(17,21,22,18)(19,27,25,23)(20,29,30,24)(26,32,28,31)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.