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