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