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