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