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