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