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