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