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