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)(11,15)(12,13)(14,16)(18,22)(19,24)(25,26,30,32)(27,31,29,28)(1,2)(3,5)(4,6)(7,8)(10,13)(14,15)(18,22)(19,24)(25,27,30,29)(26,28,32,31)(3,8)(5,7)(9,11,12,16)(10,14,13,15)(17,18,21,22)(19,23,24,20)(25,28)(26,27)(29,32)(30,31)(1,2)(3,5)(4,6)(7,8)(9,10)(11,14)(12,13)(15,16)(17,19)(18,23)(20,22)(21,24) involution — undirected(1,3)(2,5)(4,8)(6,7)(9,11)(10,14)(12,16)(13,15)(17,20,21,23)(18,19,22,24)(25,29,30,27)(26,31,32,28)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.