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)(17,18,23,21)(19,20,26,24)(22,29,30,25)(27,31,32,28)(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)(18,21)(19,26)(25,29)(27,32)(33,34,39,36)(35,40,43,38)(37,44,46,41)(42,45,48,47)(2,9)(3,11)(4,14)(10,13)(17,19,23,26)(18,24,21,20)(22,27,30,32)(25,31,29,28)(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)(17,20)(18,19)(21,26)(22,28)(23,24)(25,27)(29,32)(30,31)(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)(17,21,23,18)(19,20,26,24)(22,29,30,25)(27,28,32,31)(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)(17,22,23,30)(18,25,21,29)(19,27,26,32)(20,28,24,31)(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.