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