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