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