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