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