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