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