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