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