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