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