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