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