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