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