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