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