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