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