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)(19,21,25,30)(20,24,28,31)(26,29,32,27)(33,34)(35,41)(36,40)(37,42)(38,39)(43,48)(44,45)(46,47)(2,3)(4,11)(8,10)(12,13)(18,23)(19,25)(24,31)(26,32)(33,35)(34,37)(36,44)(38,42)(39,41)(40,48)(43,46)(45,47) involution — undirected(18,23)(19,25)(24,31)(26,32)(34,39)(35,42)(40,47)(43,44) 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)(23,30)(24,29)(27,31)(28,32)(33,35)(34,37)(36,43)(38,42)(39,41)(40,45)(44,46)(47,48)(1,4)(2,7)(3,9)(5,13)(6,11)(8,16)(10,15)(12,14)(17,20)(18,24)(19,26)(21,29)(22,28)(23,31)(25,32)(27,30)(33,36)(34,40)(35,43)(37,45)(38,46)(39,47)(41,48)(42,44) involution — undirected(1,5,6,14)(2,8,3,10)(4,12,11,13)(7,15,9,16)(17,21)(18,19)(20,27)(22,30)(23,25)(24,32)(26,31)(28,29)(33,37)(34,35)(36,45)(38,41)(39,42)(40,43)(44,47)(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.