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