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