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