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