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