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