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