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