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