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