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