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