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