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