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