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