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