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