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