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