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