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