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