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