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