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