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