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