One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,3)(5,6,9,12)(7,10,14,18)(8,11,16,20)(13,17,15,19)(21,22,26,31)(23,27,33,40)(24,29,35,44)(25,28,37,30)(32,39,45,51)(34,38,47,41)(36,42,48,43)(46,49,52,50)(2,3)(5,7)(6,10)(8,15)(9,14)(11,19)(12,18)(13,16)(17,20)(21,23,26,33)(22,27,31,40)(24,32,35,45)(25,34,37,47)(28,38,30,41)(29,39,44,51)(36,46,48,52)(42,49,43,50)(5,8,9,16)(6,11,12,20)(7,13,14,15)(10,17,18,19)(22,28)(24,35)(25,37)(27,38)(29,43)(30,31)(32,45)(34,47)(39,50)(40,41)(42,44)(49,51)(1,3,4,2)(8,16)(11,20)(13,15)(17,19)(21,24,26,35)(22,29,31,44)(23,32,33,45)(25,36,37,48)(27,39,40,51)(28,42,30,43)(34,46,47,52)(38,49,41,50)(6,12)(7,14)(11,20)(13,15)(23,33)(24,35)(27,40)(29,44)(34,47)(36,48)(38,41)(42,43) 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.