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