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