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