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