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