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