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