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