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