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