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