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