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