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