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