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