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