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