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