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