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