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