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