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