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