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