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