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