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