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