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