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