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)(17,18,22,26)(19,21,25,23)(20,24,30,28)(27,31,32,29)(33,34,37,40)(35,41,43,38)(36,39,45,48)(42,47,44,46)(4,11)(7,9)(12,16)(14,15)(17,19,22,25)(18,23,26,21)(20,27,30,32)(24,29,28,31)(33,35)(34,38)(36,44)(37,43)(39,47)(40,41)(42,45)(46,48)(2,3)(7,9)(8,10)(14,15)(33,35,37,43)(34,38,40,41)(36,42,45,44)(39,46,48,47)(1,3,6,2)(4,9,11,7)(5,10,13,8)(12,15,16,14)(17,18)(19,23)(20,28)(21,25)(22,26)(24,30)(27,31)(29,32)(33,35)(34,38)(36,42)(37,43)(39,46)(40,41)(44,45)(47,48)(1,4,6,11)(2,7,3,9)(5,12,13,16)(8,14,10,15)(17,20)(18,24)(19,27)(21,31)(22,30)(23,29)(25,32)(26,28)(33,36,37,45)(34,39,40,48)(35,42,43,44)(38,46,41,47)(1,5,6,13)(2,8,3,10)(4,12,11,16)(7,14,9,15)(17,21,22,23)(18,25,26,19)(20,29,30,31)(24,27,28,32)(33,34)(35,38)(36,39)(37,40)(41,43)(42,46)(44,47)(45,48)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.