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