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