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