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