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