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