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