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