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