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