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