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