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