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