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