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