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)(21,26,32,41)(22,34,36,42)(23,28,24,37)(27,38,43,35)(30,44,46,49)(31,40,33,47)(39,48,50,45)(3,5,7,13)(4,8,10,11)(6,14,15,12)(9,17,18,16)(19,21)(20,26)(22,30)(23,31)(24,33)(25,32)(27,39)(28,40)(29,41)(34,44)(35,45)(36,46)(37,47)(38,48)(42,49)(43,50)(3,6,7,15)(4,9,10,18)(5,12,13,14)(8,16,11,17)(19,22)(20,27)(21,30)(23,35)(24,38)(25,36)(26,39)(28,42)(29,43)(31,45)(32,46)(33,48)(34,37)(40,49)(41,50)(44,47)(4,10)(8,11)(9,18)(16,17)(19,23,25,24)(20,28,29,37)(21,31,32,33)(22,35,36,38)(26,40,41,47)(27,42,43,34)(30,45,46,48)(39,49,50,44)(21,32)(26,41)(30,46)(31,33)(39,50)(40,47)(44,49)(45,48) involution — undirectedA 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.