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