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)(36,41)(37,42)(38,51)(39,43)(40,46)(45,59)(47,54)(48,56)(49,58)(50,57)(52,55)(53,61)(60,63)(62,64)(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)(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)(34,40)(36,45)(37,46)(38,52)(39,47)(41,53)(42,54)(43,55)(44,51)(48,60)(49,62)(50,61)(56,59)(57,64)(58,63) involution — undirected(4,16)(8,22)(13,27)(17,26)(20,31)(23,29)(24,32)(28,30)(33,36,39,49)(34,41,43,58)(35,45,47,62)(37,50,38,48)(40,53,55,63)(42,57,51,56)(44,59,54,64)(46,61,52,60)(3,14)(7,21)(11,25)(13,27)(15,19)(20,31)(24,32)(28,30)(33,37,39,38)(34,42,43,51)(35,46,47,52)(36,48,49,50)(40,54,55,44)(41,56,58,57)(45,60,62,61)(53,59,63,64)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.