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)(19,27,20,29)(21,31,32,26)(23,30,25,28)(9,11,12,16)(10,13,14,15)(17,19,22,20)(18,23,24,25)(21,30,32,28)(26,29,31,27)(1,4,5,3)(2,6,7,8)(18,24)(19,28)(20,30)(21,32)(23,29)(25,27)(17,20,22,19)(18,25,24,23)(21,28,32,30)(26,27,31,29)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.