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)(21,29)(26,30)(27,32)(28,31)(33,34)(35,40)(36,45)(37,47)(38,39)(41,46)(42,43)(44,48)(2,6)(7,9)(8,13)(14,15)(18,23)(20,24)(26,30)(28,31)(34,39)(40,48)(41,45)(42,47) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,11)(10,14)(12,13)(15,16)(17,18)(19,24)(20,25)(21,26)(22,23)(27,31)(28,32)(29,30)(33,35,38,44)(34,40,39,48)(36,43,46,37)(41,47,45,42)(1,2)(3,7)(4,8)(5,6)(9,11)(10,14)(12,13)(15,16)(17,19,22,25)(18,24,23,20)(21,27,29,32)(26,31,30,28)(33,36)(34,41)(35,43)(37,44)(38,46)(39,45)(40,47)(42,48)(1,3)(2,7)(4,10)(5,11)(6,9)(8,14)(12,16)(13,15)(17,20,22,24)(18,25,23,19)(21,28,29,31)(26,32,30,27)(33,34)(35,40)(36,41)(37,42)(38,39)(43,47)(44,48)(45,46)(1,4,5,12)(2,8,6,13)(3,10,11,16)(7,14,9,15)(17,21)(18,26)(19,27)(20,28)(22,29)(23,30)(24,31)(25,32)(33,37,38,43)(34,42,39,47)(35,36,44,46)(40,41,48,45)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.