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