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