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