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