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