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)(11,15)(12,13)(14,16)(17,18,23,28)(19,30,32,25)(20,33,37,44)(21,39,40,46)(22,29,24,27)(26,36,45,38)(31,47,48,42)(34,43,35,41)(2,6)(7,8)(10,13)(11,16)(17,19,23,32)(18,25,28,30)(20,34,37,35)(21,24,40,22)(26,42,45,47)(27,39,29,46)(31,36,48,38)(33,41,44,43)(1,3,5,4)(2,7,6,8)(9,11,12,16)(10,14,13,15)(17,20,22,36,23,37,24,38)(18,26,27,44,28,45,29,33)(19,31,40,35,32,48,21,34)(25,41,46,47,30,43,39,42)(1,4,5,3)(2,8,6,7)(10,13)(14,15)(17,21,24,32,23,40,22,19)(18,25,29,39,28,30,27,46)(20,35,38,31,37,34,36,48)(26,43,33,47,45,41,44,42)(2,6)(7,8)(10,13)(14,15)(17,22,23,24)(18,27,28,29)(19,21,32,40)(20,36,37,38)(25,39,30,46)(26,44,45,33)(31,34,48,35)(41,42,43,47)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.