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