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