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