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