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