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