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