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