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