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