One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(5,6)(7,10)(8,9)(11,12)(13,14)(15,18)(16,21)(17,20)(19,23)(22,25)(24,27)(26,28)(30,31)(32,39)(33,41)(42,43) involution — undirected(7,11)(10,12)(14,15)(16,23)(17,25)(26,27)(29,30,34,31)(32,37,39,35)(33,38,41,36)(40,42,44,43)(6,9)(10,12)(13,15,18,14)(16,21,23,19)(17,20,25,22)(24,26,28,27)(29,31,34,30)(32,37,39,35)(33,36,41,38)(40,42,44,43)(1,2)(3,4)(5,6)(7,10)(8,9)(11,12)(13,16)(14,19)(15,21)(17,24)(18,23)(20,26)(22,27)(25,28)(29,32,34,39)(30,35,31,37)(33,40,41,44)(36,42,38,43)(5,7)(6,10)(8,11)(9,12)(13,17,18,25)(14,20,15,22)(16,24,23,28)(19,26,21,27)(29,33,34,41)(30,36,31,38)(32,40,39,44)(35,42,37,43)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.