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