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