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