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