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