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