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