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