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