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