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