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