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)(21,34)(26,40)(31,45)(33,36)(35,41)(38,47)(43,48)(44,46)(1,3)(2,5)(4,8)(6,7)(17,18,23,28)(19,29,32,42)(20,27,22,25)(21,35,34,41)(24,37,39,30)(26,36,40,33)(31,38,45,47)(43,44,48,46)(9,11,12,16)(10,13,14,15)(17,19)(18,24)(20,30)(21,31)(22,37)(23,32)(25,29)(26,38)(27,42)(28,39)(33,44)(34,45)(35,43)(36,46)(40,47)(41,48)(2,6)(5,7)(17,20,23,22)(18,25,28,27)(19,30,32,37)(21,36,34,33)(24,29,39,42)(26,41,40,35)(31,46,45,44)(38,48,47,43)(3,8)(5,7)(17,21,23,34)(18,26,28,40)(19,31,32,45)(20,33,22,36)(24,38,39,47)(25,35,27,41)(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.