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