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