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