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