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