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