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