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