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)(24,31)(25,36)(30,38)(32,40)(33,39)(35,42)(37,41)(43,46)(44,48)(45,47)(2,6)(7,8)(9,11,13,10)(12,15,16,14)(17,19,22,31,23,33,21,32)(18,24,26,29,28,40,27,39)(20,30,37,45,35,44,36,46)(25,38,42,43,41,48,34,47)(1,3,5,4)(2,7,6,8)(10,11)(14,15)(17,20,21,36,23,35,22,37)(18,25,27,34,28,41,26,42)(19,30,32,46,33,44,31,45)(24,38,39,47,40,48,29,43)(1,4,5,3)(2,8,6,7)(12,16)(14,15)(20,35)(25,41)(30,44)(34,42)(36,37)(38,48)(43,47)(45,46)(9,12,13,16)(10,14,11,15)(17,21,23,22)(18,26,28,27)(19,31,33,32)(20,36,35,37)(24,39,40,29)(25,42,41,34)(30,45,44,46)(38,47,48,43)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.