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