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