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