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