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