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