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