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