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