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