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