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