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