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