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