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