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