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