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