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