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