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