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