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