One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,14,18,39)(4,20)(5,10)(6,28)(7,13)(8,16,34,19)(9,23)(11,26)(12,27)(15,46,21,56)(17,41,29,33)(22,42)(24,54)(25,55)(30,38)(31,40)(32,62,35,51)(36,58)(37,59)(43,60)(44,57,63,48)(45,50,61,52)(47,53,49,64)(1,3)(2,8)(4,21)(5,19)(6,29)(7,18)(9,35)(10,39)(11,41)(12,14)(13,34)(15,24)(16,27)(17,31)(20,53)(22,47)(23,48)(25,49)(26,50)(28,61)(30,51)(32,37)(33,43)(36,63)(38,44)(40,45)(42,46)(52,60)(54,64)(55,56)(57,59)(58,62) involution — undirected(1,4,7,24)(2,9)(3,15)(5,25,27,22)(6,30,31,58)(8,32,34,35)(10,38)(11,42)(12,36)(13,37)(14,44,39,63)(16,49)(17,51)(18,21)(19,47)(20,40)(23,26,59,60)(28,54)(29,62)(33,46,41,56)(43,55)(45,64,61,53)(48,50)(52,57)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.