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