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