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