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