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