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