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