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