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