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