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