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