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