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