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