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