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