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