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