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