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