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