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