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