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