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