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