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