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