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