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