One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(3,4)(5,11)(6,9)(7,10)(8,13)(12,17)(14,16)(15,18)(19,20,25,29)(21,30,31,47)(22,27,24,39)(23,35,38,49)(26,41,42,33)(28,34,46,37)(32,48,40,45)(36,43,50,44)(3,5,7,13)(4,8,10,11)(6,14,15,12)(9,17,18,16)(21,31)(26,42)(30,47)(32,40)(33,41)(36,50)(43,44)(45,48)(3,6,7,15)(4,9,10,18)(5,12,13,14)(8,16,11,17)(19,21)(20,26)(22,32)(23,36)(24,40)(25,31)(27,43)(28,45)(29,42)(30,35)(33,37)(34,41)(38,50)(39,44)(46,48)(47,49)(4,10)(8,11)(9,18)(16,17)(19,22,25,24)(20,27,29,39)(21,32,31,40)(23,34,38,37)(26,43,42,44)(28,35,46,49)(30,48,47,45)(33,36,41,50)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.