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