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