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