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