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