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