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