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