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