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