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