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