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)(19,26)(21,23)(27,29)(30,32)(33,34)(35,43)(36,45)(37,42)(38,41)(39,40)(44,47)(46,48) involution — undirected(1,3)(2,6)(4,11)(5,10)(7,9)(8,14)(12,15)(13,16)(17,18)(19,21)(20,28)(22,25)(23,26)(24,31)(27,30)(29,32)(33,35)(34,37)(36,44)(38,48)(39,43)(40,42)(41,47)(45,46) involution — undirected(3,10)(6,7)(11,16)(14,15)(17,19,22,26)(18,23,25,21)(20,27,31,29)(24,30,28,32)(33,36,40,38)(34,41,39,45)(35,44,42,48)(37,47,43,46)(1,3)(2,7)(4,11)(5,10)(6,9)(8,15)(12,14)(13,16)(17,19)(18,21)(20,29)(22,26)(23,25)(24,30)(27,31)(28,32)(33,37,40,43)(34,42,39,35)(36,46,38,47)(41,44,45,48)(1,2)(3,6)(4,12)(5,9)(7,10)(8,13)(11,15)(14,16)(17,20)(18,24)(19,27)(21,32)(22,31)(23,30)(25,28)(26,29)(33,38,40,36)(34,41,39,45)(35,44,42,48)(37,46,43,47)(1,4)(2,8)(3,11)(5,13)(6,14)(7,15)(9,12)(10,16)(17,21)(18,19)(20,30)(22,23)(24,29)(25,26)(27,28)(31,32)(33,39,40,34)(35,43,42,37)(36,45,38,41)(44,46,48,47)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.