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