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)(17,18,22,25)(19,21,27,23)(20,24,28,31)(26,29,32,30)(33,34,39,40)(35,41,37,43)(36,46,47,42)(38,44,48,45)(1,2,6,3)(4,9,12,7)(5,8,13,10)(11,15,16,14)(20,28)(24,31)(26,32)(29,30)(34,40)(36,47)(41,43)(44,45)(2,3)(7,9)(8,10)(14,15)(17,19,22,27)(18,23,25,21)(20,26,28,32)(24,30,31,29)(33,35,39,37)(34,41,40,43)(36,45,47,44)(38,42,48,46)(1,3,6,2)(4,9,12,7)(5,10,13,8)(11,15,16,14)(17,19)(18,21)(20,26)(22,27)(23,25)(24,29)(28,32)(30,31)(33,36)(34,42)(35,45)(37,44)(38,43)(39,47)(40,46)(41,48)(1,4)(2,7)(3,9)(5,11)(6,12)(8,14)(10,15)(13,16)(17,20,22,28)(18,24,25,31)(19,26,27,32)(21,29,23,30)(33,37,39,35)(34,43,40,41)(36,45,47,44)(38,42,48,46)(1,5,6,13)(2,8,3,10)(4,11,12,16)(7,14,9,15)(17,21)(18,19)(20,29)(22,23)(24,26)(25,27)(28,30)(31,32)(33,38,39,48)(34,44,40,45)(35,42,37,46)(36,43,47,41)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.