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