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