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)(11,13)(12,14)(15,16)(17,18,23,27)(19,28,31,39)(20,32,34,25)(21,26,22,36)(24,37,40,30)(29,43,45,42)(33,47,35,41)(38,44,46,48)(9,11)(10,13)(12,15)(14,16)(17,19,23,31)(18,24,27,40)(20,29,34,45)(21,30,22,37)(25,38,32,46)(26,39,36,28)(33,44,35,48)(41,43,47,42)(1,3,5,4)(2,6,7,8)(11,15)(13,16)(17,20)(18,25)(19,29)(21,33)(22,35)(23,34)(24,38)(26,41)(27,32)(28,42)(30,44)(31,45)(36,47)(37,48)(39,43)(40,46)(11,15)(13,16)(17,21,23,22)(18,26,27,36)(19,30,31,37)(20,33,34,35)(24,39,40,28)(25,41,32,47)(29,44,45,48)(38,43,46,42)(1,4,5,3)(2,6,7,8)(10,14)(13,16)(20,34)(25,32)(29,45)(33,35)(38,46)(41,47)(42,43)(44,48)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.