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