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