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