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