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