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)(17,18,23,26,22,21,20,25)(19,27,28,32,29,24,30,31)(1,2)(3,8)(4,6)(5,7)(9,10)(11,14)(12,13)(15,16)(17,19)(18,24)(20,30)(21,27)(22,29)(23,28)(25,32)(26,31) involution — undirected(1,3,5,4)(2,6,7,8)(10,13)(14,15)(17,20,22,23)(18,25,21,26)(19,28,29,30)(24,31,27,32)(1,4,5,3)(2,6,7,8)(10,13)(14,15)(17,21,23,25,22,18,20,26)(19,24,28,31,29,27,30,32)(9,11,12,16)(10,14,13,15)(17,20,22,23)(18,26,21,25)(19,28,29,30)(24,32,27,31)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.