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