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