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