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