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