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