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