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