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)(17,18,23,20)(19,21,24,26)(22,25,31,28)(27,29,32,30)(33,34,40,39)(35,43,44,38)(36,41,47,46)(37,48,45,42)(1,3,6,10)(2,4,7,9)(5,11,14,16)(8,12,13,15)(19,24)(21,26)(27,32)(29,30)(33,35,40,44)(34,38,39,43)(36,42,47,48)(37,41,45,46)(2,7)(3,10)(8,13)(11,16)(17,19)(18,21)(20,26)(22,27)(23,24)(25,29)(28,30)(31,32)(33,36,40,47)(34,41,39,46)(35,42,44,48)(37,38,45,43)(1,2)(3,4)(5,8)(6,7)(9,10)(11,12)(13,14)(15,16)(17,20,23,18)(19,26,24,21)(22,28,31,25)(27,30,32,29)(33,37,40,45)(34,42,39,48)(35,41,44,46)(36,38,47,43)(1,4)(2,3)(5,12)(6,9)(7,10)(8,11)(13,16)(14,15)(17,21,23,26)(18,24,20,19)(22,30,31,29)(25,27,28,32)(33,38)(34,35)(36,45)(37,47)(39,44)(40,43)(41,42)(46,48)(1,5)(2,8)(3,11)(4,12)(6,14)(7,13)(9,15)(10,16)(17,22)(18,25)(19,27)(20,28)(21,29)(23,31)(24,32)(26,30)(33,39,40,34)(35,43,44,38)(36,46,47,41)(37,48,45,42)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.