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