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