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