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