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