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)(10,15)(14,16)(17,18,23,25)(19,24,27,31)(20,22,29,32)(21,26,28,30)(2,7)(4,14)(8,11)(10,13)(17,19,23,27)(18,24,25,31)(20,28,29,21)(22,30,32,26)(33,34,39,37)(35,42,36,40)(38,41,46,45)(43,48,44,47)(2,7)(3,12)(9,16)(10,13)(18,25)(19,27)(20,29)(26,30)(33,35,39,36)(34,40,37,42)(38,43,46,44)(41,47,45,48)(1,3)(2,8)(4,10)(5,9)(6,12)(7,11)(13,14)(15,16)(17,20)(18,22)(19,28)(21,27)(23,29)(24,30)(25,32)(26,31)(33,36,39,35)(34,40,37,42)(38,44,46,43)(41,47,45,48)(1,4,6,14)(2,9,7,16)(3,13,12,10)(5,8,15,11)(17,21,23,28)(18,26,25,30)(19,29,27,20)(22,24,32,31)(33,37,39,34)(35,42,36,40)(38,41,46,45)(43,47,44,48)(1,5,6,15)(2,10,7,13)(3,9,12,16)(4,11,14,8)(17,22)(18,20)(19,30)(21,31)(23,32)(24,28)(25,29)(26,27)(33,38)(34,41)(35,43)(36,44)(37,45)(39,46)(40,47)(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.