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