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