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