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